Alaska Administrative Code
Title 13 - Public Safety
Part 1 - Division of Alaska State Troopers
Chapter 04 - Motor Vehicle and Driving Offenses: Vehicle Equipment and Inspection
Article 6 - Equipment on Snowmobiles, All-Purpose Vehicles and Off-Highway Vehicles
13 AAC 04.415 - Mufflers and emission-control systems

(a) A snowmobile, all-purpose vehicle, or other off-highway vehicle must be equipped with a carburetor intake, exhaust muffler, and an emission-control system in good working order, and may not use a muffler cutout, bypass or other similar device.

(b) An exception to the requirements of (a) of this section may be made under a special racing permit as provided in AS 05.35.